<html>
<head><meta charset="utf-8"><title>nll_relate: wf predicate · t-compiler/wg-nll · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/index.html">t-compiler/wg-nll</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/nll_relate.3A.20wf.20predicate.html">nll_relate: wf predicate</a></h3>

<hr>

<base href="https://rust-lang.zulipchat.com">

<head><link href="https://rust-lang.github.io/zulip_archive/style.css" rel="stylesheet"></head>

<a name="199139511"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/nll_relate%3A%20wf%20predicate/near/199139511" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lcnr <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/nll_relate.3A.20wf.20predicate.html#199139511">(May 29 2020 at 11:05)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/blob/7184d137f65bb8d143ce8b5b664e50d33c4b5fbd/src/librustc_infer/infer/nll_relate/mod.rs#L877-L879">https://github.com/rust-lang/rust/blob/7184d137f65bb8d143ce8b5b664e50d33c4b5fbd/src/librustc_infer/infer/nll_relate/mod.rs#L877-L879</a></p>
<blockquote>
<p>// FIXME: we may need a WF predicate (related to <a href="https://github.com/rust-lang/rust/issues/54105">#54105</a>).</p>
</blockquote>
<p>Is this still relevant? We now have a <code>PredicateKind::WellFormed</code> which may be applicable here</p>



<a name="199166002"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/nll_relate%3A%20wf%20predicate/near/199166002" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/nll_relate.3A.20wf.20predicate.html#199166002">(May 29 2020 at 15:02)</a>:</h4>
<p>ugh that was a long-time fixme...</p>



<a name="199166034"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/nll_relate%3A%20wf%20predicate/near/199166034" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/nll_relate.3A.20wf.20predicate.html#199166034">(May 29 2020 at 15:02)</a>:</h4>
<p>I have to bring that back into scope</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
</html>